The Cacti Manual
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# Apply Patches

Please visit the Cacti website at http://www.cacti.net/download_patches.php If any patch has been released, you will find installation instructions there.

As an example, please find patch installation instructions for cacti 0.8.6j here. Do not apply those patches to recent releases!

    wget http://www.cacti.net/downloads/patches/0.8.6j/ping_php_version4_snmpgetnext.patch
    wget http://www.cacti.net/downloads/patches/0.8.6j/tree_console_missing_hosts.patch
    wget http://www.cacti.net/downloads/patches/0.8.6j/thumbnail_graphs_not_working.patch
    wget http://www.cacti.net/downloads/patches/0.8.6j/graph_debug_lockup_fix.patch
    wget http://www.cacti.net/downloads/patches/0.8.6j/snmpwalk_fix.patch
    patch -p1 -N < ping_php_version4_snmpgetnext.patch
    patch -p1 -N < tree_console_missing_hosts.patch
    patch -p1 -N < thumbnail_graphs_not_working.patch
    patch -p1 -N < graph_debug_lockup_fix.patch
    patch -p1 -N < snmpwalk_fix.patch

You might need to reapply file/folder security on the files patched. Double check they are correct.

Please pay attention not to break cacti when using SELinux or using NTFS file security. If you encounter

`PHP Warning: include_once(./lib/html_tree.php) [<a href='function.include-once'>function.include-once</a>]: failed to open stream: Permission denied in /var/www/cacti/graphs.php on line 33, referer: http://localhost/cacti/graphs.php`

or the like, it is very likely that your permissions are wrong.

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